Hacker News Reader

I always thought JS map filter reduce felt quite nice, especially playing around with data in the REPL. Java maps with all the conversions back and forth to streams are clumsy.

View on HN

Well in JS you have to convert to arrays instead. You can't do `document.querySelectorAll(...).map(...)`.

That's the DOM API, it's not part of the language! They had reasons for querySelectorAll not returning an array.

Reply on news.ycombinator.com